033-9-0010 K33 BLG 30% CO2 + RH/T Data Logging Sensor

033-9-0010 K33 BLG 30% CO2 + RH/T Data Logging Sensor
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Compare at $349.00

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The 033-9-0010 K33 BLG (bio-logger) sensor (formerly known as the SE-0027) is designed to measure up to 30% carbon dioxide, temperature and % relative humidity, then record them to internal memory. This makes it an excellent CO2 sensor for enclosed applications like bio-incubators or for portable CO2 meters where sampling of high levels of CO2 is required.

*Please note the sensor diagram referenced in the manual displays an opposite drawing of the actual sensor module itself*


  • Measures 30% CO2, Temperature, %RH
  • Built-in Memory for Data Logging
  • Multiple Industry standard I/O options


CM-0025 K33 BLG 30% CO2 Sensor Development Kit - Easy to use, simply plug the sensor module into your PC via USB. The Devkit includes a K33 BLG sensor with pre-soldered connectors that provide power and connectivity. Use it for evaluation, rapid application development or for experiments. Uses our free GasLab® software to measure and graph carbon dioxide, to configure the sensor or for data logging.

033-9-0010 K33 BLG 30% CO2 Sensor Only - for integration into high-volume OEM products. Contact us directly for wholesale pricing on large quantities of this sensor


  • CO2 Measurement: non-dispersive infrared (NDIR)
  • Measurement Method: Sampling
  • Measurement Range: 0-300,000 ppm (0–30%)
  • Rate of Measurement: 0.5 Hz (once every 2 seconds)
  • CO2 Accuracy: ± 0.2% vol CO2 ± 3% of measured value
  • Temperature Range: -40 to 60C
  • Temperature Accuracy: ± 0.4C at 25C
  • Relative Humidity Range: 0-100% RH non condensing
  • Relative Humidity Accuracy: ± 3% RH
  • Data logging: 30 seconds to 18 hours sample interval
  • Support for real-time measurement with software
  • Memory: 5,400 log entries maximum, includes time stamp, co2, temp, RH. 1 additional analog input to the log available
  • Available Outputs: analog
  • Communication Options: UART or I2C
  • Sensor Life Expectancy: > 15 years
  • Maintenance Interval: no maintenance required
  • Self-Diagnostics: complete function check of the sensor module

Electrical / Mechanical

  • Power Input: 5.5-12 VDC max rating, stabilized to within 10%
  • Max Current: 250 mA
  • Dimensions: 2.0 × 2.25 × 0.88 inches (0.62 inches w/o tube adapter)


Free Easy-to-use GasLab™ Software

This device uses GasLab® software for setup, calibration, data logging, and real-time data analysis. GasLab® makes it easy to export data into a .CSV file that can be imported into any industry-standard software or spreadsheet. GasLab® runs on Windows XP or higher, and free to use with our products.

Download Latest Software Here


  • Data Sheets

  • Manuals

  • Technical Documents

  • Videos

  • Additional Resources

  • Case Studies

Customer Reviews

Based on 2 reviews
Philippe Lacombe


Aadu Simm
All good!

All good! I look forward to doing business again!

"Easy to install, easy to set up, and easy calibration - just what I was looking for."

- Phillip Farrar
Water Plant Superintendent

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